Wire drawing machine



Aug. 16, 193,8. w. NACKEN WIRE DRAWING MACHINE 3 Sheets-Sheet l Filed Dec. 9, 1935 Aug.l 16, 1938. w. NAcKEN WIRE DRAWING MACHINE Filed Dec. 9, 1935 3 Sheets-Sheet 2 ln I l.

Aug. 16, 1938. w. NAcKEN 2,127,306

WIRE DRAWING MACHINE Filed Dec. 9, 1935 3 Sheets-Sheet 3 Fig. 5.

55 within the drawing container 3l are mounted the drawing container, the bearings 9 vand II may be 55 Patented Aug. 1e,` 193s 2,127,306

UNITED STATES PATENT oFElcE WIRE DRAWING MACHINE Walther Nacken, Gruna, Germany Application December 9, 1935, Serial No. 53,646 In Germany February 22, 1935 8 Claims. (Cl. 205-14) This invention relates to wire drawing madrawing rollers 6 and 1,respectiveiy. Said shafts chines and more particularly to that type of 4 and 5 are mounted in bearings 8, 9 and I0, II drawing machines which may be designated as provided in the walls of the gear-casing I. Drivplural wire drawing machines. ing power is supplied to said shaft 4 by means 5 Wire drawing machines in which the drawing of the pulley I2 andv transmitted from said shaft 5 rollers are mounted on horizontal or inclined 4 to the shaft 5 by way of the gear-wheels I3, shafts and the process of wire drawing entirely I4 and I5. performed in the drawing solution are at present The shafts 4 and 5 now, according to my invennot being built in any country; this is due to the tion, extend from the gear-casing I into the fact that the places of exit and entrance of the drawing container 3 not immediately but through 10 shafts for the drawing rollers from the machine the intermediary chambers I6 and I'I, respeccasing into the drawing container cannot be kept tively, said chambers. being formed by properly perfectly tight, with the resultthat drawing liqshaping at proper places vthe wall 3.0 of the drawuid will be liable to enter the adjacent casing ing container.

which contains the gear-mechanism of the ma- At the place of entrance of the shafts 4 and 5 15 chine. into thel drawing container 3 there are provided According to my invention this drawback is stutiing boxes or tightening devices I8 and I9, obviated by the 'provision of one or more interrespectively. mediaijy chambers between the place of passage In order to safely prevent particles of liquid of the drawing roller shaft through the wall of from flowing alongside the shafts 4 and 5 through 20 the gear-casing and the place of entrance of said the stuiling boxes I8 and I9 as far as into the shaft into the liquid container, so that all drawgear-casing I, a baffle-disk 2I is mounted on l. ing liquid entering said intermediary chamber either shaft 4 and 5 in such a manner that said from said drawing container will be carried away baille-disks will surround said shafts perfectly into the supply-container. According to my inclosely. The particles of drawing liquid which 25 vention furthermore, there is eventually provided may eventually pass through the stuffing-boxes a baille-plate or the like pn the drawing roller I3 and I9 will now be thrown-off by said bailleshaft in the intermediary chamber, said plate disks and fall into the-supplycontainer 2 and y enclosing said shaft sufficiently tight to prevent then back into the container 3 by means of a particles of the drawing liquid passing along said pump, not shown. 30 shaft and entering th gear-casing. The construction so far described may of course In the accompanying drawings I have reprebe modified in a great variety of ways. In parsented some examplesl` of construction of my presticular, there is no absolute necessity of tightenent wire drawing machine. Fig. 1 shows one lng the drawing shafts 4 and 5 by means of stuffconstruction partly in a side-view and partly in ing boxes or packlngs I0 and I9 at the places of 35 section, Fig. 2 is a plan-view taken on Fig. 1, and entrance into the drawing container.

Figs. 3 and 4 illustrate arrangements and con- Instead of the stuffing boxes or packngs I8 structions of the aforesaid intermediary chamand I9 there may also be provided acid-proof bers different from those shown in Figs. 1 and 2. bearings 55 (Fig. 6) at the above indicated places.

40 Fig. 5 1S a diagrammatic View 0f a System illus- Such bearings 55, moreover, need not surround 40 trai/.ing a number Off Wire drawing machines and the respective drawing shafts liquid-tight and a a Collecting Container, and Fig- 6 is a side View small interstice 56 may also be provided between partly in section showlngamodiiied construction. said Shafts and the bearing shens to permit a Referring now more particularly to the drawpermanent and uniform ow of. the drawing Q ings' the geaff'casing l and the dxiawmgt ign uid through said interstice and subsequent detamer 3 are arranged above the supp y'con a er flectlon of said flow by the baffle-disk 2l to cause 2. The drawing solution is conveyed from said supply-container 2 into said drawing container 3 said liquid to be returned to the Suplllly contamer by means of a pump, Whenever Said latter com 2. A construction of this kind wo d result in tainer is to be lille-d. The drawing container 3 the considerable advantage that the drawing 50 may easily be emptied by opening a valve placed roller shaft is given an additional support immein a discharge-conduit that connects said two1 diately in fI'OliIOf the drawing Cone. y

containers with each other. In case a bearing is provided at the piace of On the shafts 4 and 5 at their ends positioned entrance of the drawing roller-shaft into the 2 'dispensed with'or replaced by packings or stuiling boxes.

It is furthermore by no means necessary to give to the wall 30 adjacent the gear-casing I a proper conformation for enclosing the intermediary chambers I6 and II, as said wall 30 may .also be constructed in the manner shown in Fig. 3. In this case an interstice 23 is provided between said wall 30 and the adjacent wall I of the gearcasing I, with the intermediary chambers 3I and 32 are fastened to said wall 30.

With machines operating at small speed in which a spraying-about of the drawing liquid is not to be feared,- there is no necessity of providing a special chamber for each drawing shaft I; in this case it is possible to use a single intermediary chamber common to all drawing shafts by omitting the intermediary chambers 3| and 32 shown in Fig. 3 and substituting therefor the supporting walls 4I by means of which the intermediary container is fastened to the gear-casing, said walls serving as lateral walls of the common intermediary chamber. In this case it will be necessary to shield the two bearings 3 and III shown in Fig. 1 by protective covers 22 against the sprayed-oil particles of the drawing liquid.

Although it may be of advantage to arrange the supply-container for the drawing liquid immediately underneath the drawing container, it will be possible to arrange the supply-container separate from the drawing container. In such case a common supply-container or collecting container 53 (Fig. 5) may be provided for a plurality of wire drawing machines and installed at a proper place ofthe plant. The supply container 50 for each machine will thus solely serve as a collecting container from which the drawing liquid is conveyed to the main container. Each container 50 has an outlet 5I and a main conduit 52 to the container 53. A pump 54 forces the liquid back to the'drawing containers 3.

In the examples of construction described hereinabove it is furthermore not necessary to mount the drawing shafts in exactly horizontal position, it being also possible to have these shafts positioned in more or less inclined direction with respect to the horizontal plane.- In order to have the front bearing for the drawing shaft positioned in close proximity to the drawing rollers 6 and 1 I propose to make use of the construction shown in Fig. 4. In this construction the walls of the intermediary chambers are made in the shape of a bell and fastened to the wall 30 of the drawing container 3 by means of a flange as shown in Fig. 4. Within the bellshaped wall 33 and 34 of the intermediary chamber there are provided baille-plates 35 of likewise bell-shaped onformation, said plates surrounding the drawing shafts by means of an oblong hub, the baille-plates 35 and 36, however, being also equipped with a front ball-bearing 28 and 29. The outer ring of these'ball-bearings is supported by means of a sleeve or bushing 31 and 38 fast on the gear-casing; grooves 39 and 4U are provided at the outerside of said sleeves 31 and 38 to prevent access of drawing liquid from the intermediary chamber `to the ball-bearings 23 and 29.

Above the drawing disks there may be provided protective plates 43, swingable in upward direction, in order to prevent. a spraying-about of the drawing liquid at higher speeds. Since the drawing rollers as a rule are used in pairs and the drawing container is divided into several compartments in case of larger machines, while each of said compartments contains a pair of drawing rollers, it is advisable to construct said protective plates 43 in the manner shown in Fig. 2 to always cover one pair of drawing rollers'. Each protective plate 43 is journalled by means of several hinges 44 to the rear wall of the container 3 or to some auxiliary member 45 permitting upward swinging motion of said plates in order to permit the wire to be drawn into the machine.

The lateral rims 46 of the protective plate are bent downward as shown in the drawing in order to prevent motion of the liquid due to rotation of the vdrawing rollers against coming into action at the surface of the liquid. In other respects the protective plates, as to form and arrangement, should be constructed to meet special conditions.

I claim:

1. A wire drawing machine comprising horizontal drawing shafts, a container for a drawing liquid, a gear casing, a gear mechanism for said drawing-shafts mounted in said casing, said casing and said container having an interstice between them and separated from them by walls, bearings for said drawing-shafts traversing a lateral wall of said container beneath the plane of the surface of the drawing liquid, and a supply container to receive any drawing liquid which may leak through the bearings of the drawing shafts, the traversing place of each drawingshaft through said wall being separated from said casing by said interstice connected with the supply container arranged lower than said. firstmentioned container.

2. A wire drawing machine, as specified by claim 1, in which the container forthe drawing liquid is supported separate from the gear-casing, said machine including intermediary chambers provided in the interstice'within the range of the places of passage of said drawing-shafts through said container for drawing liquid, said intermediary chambers being positioned at the rear of said latter container, the rear-wall of said chambers adapted to prevent access of drawing liquid to said bearings.

3. A wire drawing machine according to claim 1, in which the container for the drawing liquid and the gear casing are mounted above the supply container, and in which chambers are provided intermediate said container for the drawing liquid and the casing and opening toward said casing.

4. A wire drawing machine according to claim 1, in which a baille disk is mounted on each shaft within the interstice and in which a special protective cover is provided for each shaft within range of each bearing to prevent the liquid thrown off of the baille disk from reaching the bearing.

5. A wire drawing machine according to claim 1, in which an intermediary chamber is provided positioned between the container for the drawing liquidand the casing and is common to all of the drawing shafts.

6. A wire drawing machine according to' claim l, in which a collecting-container is provided for said liquid when discharged from said machine, said collecting-container being positioned underneath said container for the drawing liquid and said gear-casing, and in which a connecting conduit is provided between said collecting-container and said supply-container.

'7. A wire drawing machine according to claim 1 in which an intermediary chamber and a baille are provided, the wall of said intermediary chamber as well as said baille being of bell-shaped con- 1, in whichdrawing-rollers are provided mounted tailler.u 4

struction to enclose the bearing of the respective shafts vbeing positioned approximately horizontal, drawing-shaft, and in which a bushing is proand in which protective plates are provided covvided fast on said casing and adapted to support ering up a pair of said rollers, the under edge of said bearing. said protective plates' being positioned under- 8. A vwire drawing machine according to claim neath the level of the drawing liquid in its con- 5l on said drawing-shafts, said rollers and said 4 WAL'I'HER NACKEN. 

